Revert "Merge pull request #17657 from Snektron/spirv-recursive-ptrs"

This reverts commit b822e841cd, reversing
changes made to 0c99ba1eab.

This caused a CI failure when it landed in master branch.

src/codegen/spirv/Module.zig

@@ -507,6 +507,17 @@ pub fn arrayType(self: *Module, len: u32, elem_ty_ref: CacheRef) !CacheRef {
     } });
 }
 
+pub fn ptrType(
+    self: *Module,
+    child: CacheRef,
+    storage_class: spec.StorageClass,
+) !CacheRef {
+    return try self.resolve(.{ .ptr_type = .{
+        .storage_class = storage_class,
+        .child_type = child,
+    } });
+}
+
 pub fn constInt(self: *Module, ty_ref: CacheRef, value: anytype) !IdRef {
     const ty = self.cache.lookup(ty_ref).int_type;
     const Value = Cache.Key.Int.Value;